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Rulon Bearings

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Chemours Teflon® PFA Grade 345T Extrusion and Molding Resin for High Temperature Applications  (discontinued **)
Categories: Polymer; Thermoplastic; Fluoropolymer; Perfluoroalkoxy (PFA)

Material Notes: Teflon® PFA345T us a special-purpose resin available in clear, 2.5mm (0.1in) pellets. This resin is a chemically modified form of Teflon® PFA 345 that combines many of the benefits of the parent resin with several new ones. Like Teflon® PFA345, it offers great flex life and resistance to environmental stress cracking. The additional benefits are improves thermal stability and color while processing.

The improved thermal stability of Teflon® PFA 345T results in reduced amounts of bubbles in final parts and decreased corrosion of processing equipment. This resin can be processed at higher temperatures and higher rated than Teflon® PFA345. Teflon® PFA345T combines the processing ease of conventional thermoplastics with properties similar to those of polytetrafluoroethylene. Properly processed products made from Teflon® PFA345T resin provides the superior properties typical to fluoropolymer resins: retention of physical properties at -196°C (-320°F), and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Molded products have moderate stiffness and high ultimate elongation.

In a flame situation, products of Teflon® PFA345T resist ignition and no not themselves promote flame spread. When ignited by flame from other sources, the contribution of heat is very small and added at a low rate with very little smoke

Applications

Applications for Teflon® PFA345T include tubing, unsupported pipe linings for production of corrosive chemicals, and wire and cable insulation for chemical environments.

Chemours was formed from former DuPont performance chemicals businesses, including DuPont Fluoroproducts, in 2015.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 2.12 - 2.17 g/ccASTM D792
Water Absorption <= 0.010 %24 hours; ASTM D570
Melt Flow 5.0 g/10 minASTM D3307
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 55ASTM D2240
Tensile Strength, Ultimate 26.2 MPaASTM D3307
 9.60 MPa
@Temperature 250 °C
ASTM D3307
Tensile Strength, Yield 26.2 MPaASTM D3307
Elongation at Break 320 %ASTM D3307
 480 %
@Temperature 250 °C
ASTM D3307
Flexural Modulus 0.551 GPaASTM D790
Izod Impact, Notched NBASTM D256
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cmASTM D257
Surface Resistivity per Square >= 1.00e+17 ohmASTM D257
Dielectric Constant 2.1
@Frequency 60.0 - 1.00e+6 Hz
ASTM D150
Dielectric Strength 52.0 kV/mmASTM D149
Dissipation Factor 0.00010
@Frequency 1e+6 Hz
ASTM D150
Arc Resistance >= 180 secASTM D495
 
Thermal PropertiesOriginal ValueComments
CTE, linear 130 µm/m-°C
@Temperature 21.0 - 100 °C
ASTM D696
Melting Point 302 - 310 °CASTM D3418
Maximum Service Temperature, Air 260 °C
Flammability, UL94 V-0
Oxygen Index >= 95 %ASTM D2863
 
Processing PropertiesOriginal ValueComments
Processing Temperature 379 - 399 °CCure Temperature
 
Descriptive Properties
20% Hydrochloric Acid Transmission, g/100sq in.<0.02
50% Sodium Hydroxide Transmission, g/100sq in.<.02
Acetic Acid Transmission, g/100sq in.0.41
Acetone Transmission, g/100sq in.0.95
Acetophenone Transmission, g/100sq in.0.5
Benzene Transmission, g/100sq in.0.64
Carbon Tetrachloride Transmission, g/100sq in.0.31
Chemical/Solvent ResistanceExcellent
Ethyl Acetate Transmission, g/100sq in.0.76
Folding Endurance, # cycles, .18-.20 mm10-500 E3
Heat of Combustion J/g5300ASTM D240
Hexane Transmission, g/100sq in.0.56
Piperidine Transmission, g/100sq in.0.04
Red Fuming Nitric Acid Transmission, g/100sq in.7.5-1.4
Salt Spray Resistance on aluminum, Hours1000
Sulfuric Acid Transmission, g/100sq in.0.00001
Water Transmission, g/100sq in.0.4
Weather Resistance10Years unaffected in Florida Exposure

**
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PDU9222 / 33335

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